#include<stdlib.h>
#include<stdio.h>
#include<string.h>
typedef struct
{
	char key[10];
	char name[20];
	int age;
}Data;
typedef struct Node
{
	Data nodeData;
	struct Node* nextNode;
}CLType;

CLType* CLAddEnd(CLType* head, Data nodeData);
CLType* CLAddFirst(CLType* head, Data nodeData);
CLType* CLFindNode(CLType* head, char* key);
CLType* CLInsertNode(CLType* head, char* findkey, Data nodeData);
int CLDeleteNode(CLType* head, char* key);
int CLLength(CLType* head);
void CLALLNode(CLType* head);
